SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 321
   NWS STORM PREDICTION CENTER NORMAN OK
   1245 PM MDT TUE MAY 24 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          NORTHEASTERN COLORADO
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL
   800 PM MDT.
   
   TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
   TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE MILES
   EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHWEST OF AKRON
   COLORADO TO 10 MILES SOUTH SOUTHEAST OF LIMON COLORADO.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU1).
   
   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
   PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
   WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
   WARNINGS.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 320...
   
   DISCUSSION...MOIST UPSLOPE FLOW AND STRONG SURFACE HEATING IS
   RESULTING IN STORMS  DEVELOPING IN THE FOOTHILLS. AS THESE STORMS
   MOVE EASTWARD INTO THE PLAINS THROUGH THE AFTERNOON HOURS...A
   MODERATELY UNSTABLE AIR MASS AND 40-50 KT DEEP LAYER SHEAR WILL
   RESULT IN SUPERCELLS. THE MAIN THREAT WILL BE VERY LARGE HAIL.
   HOWEVER...A FEW TORNADOES ARE ALSO POSSIBLE ALONG THE DENVER
   CYCLONE/COLD FRONT THAT EXTENDS FROM NEAR DENVER NEWD TO THE NERN
   CORNER OF CO.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
   GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
   MEAN STORM MOTION VECTOR 31025.
   
   
   ...IMY